Checking And Resetting "Service" On The Programming Unit Of The Gas Condensing Module - Viessmann Vitovalor PT2 E11T Installation And Service Instructions Manual

Adjusting heating curves
The heating curve is offset along the set room temper-
ature axis. The start and stop points of the heating cir-
cuit pumps depend on the Heating limit... outside tem-
perature, heating circuit... setting.
90
A
C
-20
B
E
D
Fig. 71 Example 1: Adjusting the set room tempera-
ture from 20 to 26 °C
Flow temperature in °C
A
Outside temperature in °C
B
Set room temperature in °C
C
Heating circuit pump "OFF"
D
Heating circuit pump "ON"
E
Changing the set room temperature
Operating instructions
Reduced room temperature
90
A
C
-20
B
D E
Fig. 72 Example 2: Adjusting the reduced set room
temperature from 5 °C to 14 °C
A Flow temperature in °C
Outside temperature in °C
B
Set room temperature in °C
C
Heating circuit pump "OFF"
D
Heating circuit pump "ON"
E

Checking and resetting "Service" on the programming unit of the gas condensing module

In the following cases,
tor flashes):
The specified limits have been reached.
■
There is cause for a warning.
■
(cont.)
will be displayed (red indica-
Commissioning, inspection, maintenance
Changing the reduced set room temperature
Operating instructions
Changing the slope and level
Individually adjustable for each heating circuit.
90
3.5
A
+20 -20
Outside temperature in °C
Fig. 73
Changing the slope
A
Changing the level (vertical parallel offset of the
B
heating curve)
Tap the following buttons:
1.
2. "Heating"
3. Select "Heating circuit 1 2 3 4" for the required
heating circuit.
4. "Heating curve"
5. "Slope" or "Level"
6. Use +/ to select the heating curve according to
–
the system requirements.
7. to confirm
Checking service messages
1.
2. for "Message lists"
3. for "Service".
1.4
B
0.2
81